課程來源：PHET

Faraday's Electromagnetic Lab法拉第電磁實驗

翻譯:陳盈
編輯:劉夏泱

Play with a bar magnet and coils to learn about Faraday's law. Move a bar magnet near one or two coils to make a light bulb glow. View the magnetic field lines. A meter shows the direction and magnitude of the current. View the magnetic field lines or use a meter to show the direction and magnitude of the current. You can also play with electromagnets, generators and transformers!

通過擺弄磁棒和硬幣來瞭解法拉第定律。在一兩枚硬幣附近移動磁棒來讓燈泡發光。觀察磁場線。儀錶顯示電流的方向和量級。觀察此長線或利用儀錶來顯示電流的方向和量級。你還可以用電磁石，發電機和變壓器！

Topics

Main Topics

Faraday's Law 法拉第定律 Magnetic Field 磁場 Magnet 磁體

Sample Learning Goals

Predict the direction of the magnet field for different locations around a bar magnet and electromagnet. 預測在磁棒和電磁石附近不同位置的磁場方向。 Compare and contrast bar magnets and electromagnets. 對比磁棒和電磁石。 Identify the characteristics of electromagnets that are variable and what effects each variable has on the magnetic field's strength and direction. 指出電磁石的特性是可變的，以及每個變數在磁場力量和方向上的作用。 Relate magnetic field strength to distance quantitatively and qualitatively. 定性定量地描述磁場力量與距離的關係。 Compare and contrast the fields of gravity and magnets qualitatively. 定性對比重力場和磁體。 Identify equipment and conditions that produce induction. 指出產生感應的裝置和條件。 Compare and contrast how both a light bulb and voltmeter can be used to show characteristics of the induced current. 對比燈泡和伏特計如何用來表示感應電流的特性。 Predict how the current will change when the conditions are varied. 預測當條件變化時，電流將如何變化。

Teaching Ideas

Tips for Teachers

There is no teacher's guide for this simulation. 該模擬沒有教師指導。

Ideas and Activities for this Sim

There are no contributions for this simulation.該模擬沒有投稿。

Software Requirements

Windows系統	Macintosh系統	Linux系統
Microsoft Windows 98SE/2000/XP/Vista Sun Java 1.4.2_17或更新版本	OS 10.3.9或更新版本 Apple Java 1.4.2_17或更新版本	Sun Java 1.4.2_17或更新版本

Translated Versions

	Spanish 西班牙語
	Arabic 阿拉伯語
	German 德語
	Greek 希臘語
	Estonian 愛沙尼亞語
	French 法語
	Hungarian 匈牙利語
	Lithuanian 立陶宛語
	Dutch 荷蘭語
	Portuguese 葡萄牙語
	Russian 俄語
	Slovak 斯洛伐克語
	Slovenian 斯洛文尼亞語
	Ukrainian 烏克蘭語

Credits

Design Team	Libraries	Thanks To
Michael Dubson Chris Malley (程式師) Kathy Perkins Carl Wieman Interviewer訪問者: Danielle Harlow Interviewer訪問者: Archie Paulson

Interactive Physics Simulations

互動物理類比

Fun, interactive, research-based simulations of physical phenomena from the Physics Education Technology project at the University of Colorado.

在科羅拉多大學的物理教育技術專案中，有物理現象的互動類比，以研究為基礎，生動有趣。

About PhET 關於PhET

Principal Sponsors主要贊助者

The William and Flora Hewlett Foundation William和Flora Hewlett基金會

Makes grants to address the most serious social and environmental problems facing society, where risk capital, responsibly invested, may make a difference over time.

面向社會，提供資金以解決最嚴峻的社會和環境問題，投入風險資本與責任，希望隨著時間的過去能產生改變。

National Science Foundation 美國科學基金會

An independent federal agency created by Congress in 1950 to promote the progress of science.
獨立的聯邦機構，1950年由國會創立，旨在促進科學發展。
其他贊助者

PhET would like to thank the following organizations, companies, and individuals for their support:

PhET感謝以下機構、企業和個人所提供的支援：

Financial Support財政支持

Platinum Level Contributors ($100k+) 白金級別捐獻者（10萬美元以上）
The William and Flora Hewlett Foundation William和Flora Hewlett基金會

The National Science Foundation美國科學基金會

The Kavli Operating Institute美國科維理運作研究中心

University of Colorado 科羅拉多大學

Gold Level Contributors ($10k - $100k) 黃金級別捐獻者（1萬－10萬美元）

Microsoft Research 微軟研究

Bronze Level Contributors ($0 - $10k) 青銅級別捐獻者（1萬美元以下）

Dr. Andrew McNeil Andrew McNeil博士

Technical Support技術支援

Piccolo
An open source graphics library 開源圖片庫 JFreeChart
An open source chart library 開源圖表庫 Raymond Sheh's JADE
A dynamics engine 動力引擎 Sourceforge.net
For hosting our source code repository 儲存我們的原始程式碼庫 Proguard
An open source tool for code shrinking 縮短代碼的開源工具 JetBrains
For providing for our Java development environment 支援我們JAVA環境的發展 ej-technologies
For providing for our Java profilers 提供Java profilers BitRock
For providing for our installer builder 提供安裝器的創建工具 Royal Interactive
For original site concept 構思原始網站 Dynamical Systems
For providing one of their tutorials 提供教程

About PhET關於PhET

The Physics Education Technology (PhET) project is an ongoing effort to provide an extensive suite of simulations for teaching and learning physics and chemistry and to make these resources both freely available from the PhET website and easy to incorporate into classrooms.

物理教育技術專案(PhET)長期提供大量物理化學的教學模擬，使這些資源可以在PhET網站上免費獲得，也可以輕鬆地併入課堂內容。

The simulations are animated, interactive, and game-like environments in which students learn through exploration. In these simulations, we emphasize the connections between real life phenomena and the underlying science and seek to make the visual and conceptual models that expert physicists use accessible to students.

模擬是動畫形式的互動遊戲環境，學生可以在探索中學習。在這些模擬中，我們強調生活中實際現象和內在科學的聯繫，努力建立物理專家使用的視覺概念模型，促進學生理解。

Our team of scientists, software engineers and science educators uses a research-based approach in our design – incorporating findings from prior research and our own testing – to create simulations that support student engagement with and understanding of physics concepts.

我們的科學家、軟體工程師和科學教育者隊伍在設計中使用基於研究的方法——結合之前的研究和我們自己的檢驗成果，建立模擬，說明學生深入理解物理概念。

PhET simulations animate what is invisible to the eye, such as atoms, electrons, photons and electric fields. User interaction is encouraged by engaging graphics and intuitive controls that include click-and-drag manipulation, sliders and radio buttons. By immediately animating the response to any user interaction, the simulations are particularly good at establishing cause-and-effect and at linking multiple representations.

PhET模擬動畫是肉眼看不到的，例如原子、電子、光子和電場。使用者通過圖形和直覺控制進行互動，包括點擊和拖拽操作，滾動和廣播按鈕。模擬動畫對所有用戶互動的即時反應，出色地建立起因－效果鏈條，連接多個演示。

For quantitative exploration, the simulations have measurement instruments available, such as a ruler, stop-watch, voltmeter and thermometer. All the simulations are extensively tested for usability and educational effectiveness, and a rating system is used to indicate what level of testing they have received. The tests involve student interviews and use of the simulations in a variety of settings, including lectures, group work, homework and lab work.

在定量探測上，模擬有測量工具，例如尺子、碼錶、伏特計和溫度計。所有模擬的可用性和教育效用都得到廣泛的測試，並運用評級系統來顯示所達到的測試水準。測試包括學生訪問和在不同情景下使用類比的情況，包括課堂、小組研討、作業和實驗。

The PhET simulations are easy to use. They are written in Java and Flash, and can be run using a standard web browser as long as the latest Flash and Java plug-ins are installed.

PhET模擬使用輕鬆。它們用Java和Flash編寫，只要安裝最新的Flash和Java外掛程式，就可以通過標準網路流覽器運行類比。

FAQ常見問題

This page contains commonly asked questions and answers. If you can't answer your question here, please notify us by email at the following address: phethelp@colorado.edu.

該頁包含很多常見的問題與答案。如果你找不到問題的答案，請通過以下電郵通知我們：phethelp@colorado.edu

Where can I get the source code for the PhET simulations? 我從哪裡可以獲得PhET模擬的原始程式碼呢？

Where can I get the source code for the PhET simulations?

我從哪裡可以獲得PhET模擬的原始程式碼呢？

The source code for all PhET simulations is hosted at SourceForge. The latest version can always be found there. To access the source code, you will need a Subversion client such as TortoiseSVN (Windows-only) or SmartSVN (all platforms).

所有PhET模擬的原始程式碼都在SourceForge網站上。最新的版本都在那裡。你需要一個Subversion的用戶端來獲得原始程式碼，例如TortoiseSVN（限Windows使用），或者SmartSVN（所有平臺適用）。

News最新消息

Subscribe to Newsletter 訂閱通訊

The best way to learn about changes to the PhET simulations or website is to subscribe to PhET newsletters, distributed approximately four times per year.

You may unsubscribe from the newsletters at any time.

訂閱PhET通訊是瞭解PhET類比或網站更新的最好方式，通訊每年四期。

你可以隨時退訂。

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